Albert Ong was the founder of Prostone Services in 1980. He first started a janitorial company, Best Janitorial Services, but eventually expanded into all cleaning related services. Once he expanded his services, he then created the company Ambassador Services. He is now one of the few Master Textile Technicians in the Peninsula today. Friendly, Professional, and Certified, Albert will definitely show all clients the quality service that they pay for. We are associated with the Peninsula Executive Association as well as the San Carlos Chamber of Commerce. Please, if you have any doubts of our excellence, contact either of these well known organizations as a reference.